A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6110-00-936-2110
NSN 6610-01-572-1715
NSN 4140-01-188-8160
NSN 6150-01-625-0370
NSN 5925-00-356-8007
NSN 5999-01-463-7443
NSN 5945-01-384-3735
NSN 5960-01-632-6576
NSN 6220-01-212-3254
NSN 6105-01-281-4279
NSN 6105-00-079-2409
NSN 5975-00-570-7858